baker



L. E. BAKER.

PUMP.

APPLICAHON HLED NOV. 28. I916.

1, ,324:,294. Patented Dec. 9,1919,

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PUMP.

APPLICATION FILED NOV- 28. I916.

Patented Dec. 9, 1919.

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L. E. BAKER.

PUMP.

APPLICAHDN FILED NOV-28.19M-

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.INVEN TOR.

A RNE Y Patented Dec. 9,1919.

U I ED ears arent onnicn;

LI NAEUs Ia, BAKER, 011" some WAYNE, INDIANA, ASSIGNOR T0 WAYNE OIL TANK AND PUMBCOMPANY, or FORT WAYNE, INDIANA, A CORPORATION or INDIANA PUMP.

Te all whomz't may concern:

Be it known that I, LINNAEUS E. BAKER, a citizen of the United States, residing at Fort ll' ayne, in the county of Allen and State of Indiana, have invented new and useful Improvements in Pumps, of which the following is a specification.

My invention relates to the class of reciprocating-piston pumpsintended to produce a constant flow; its object being to produce a structure embodying such parts and such functional relation of parts as that- (1) The quantityof liquid delivered shall accurately correspond with and be regulated by the quantum'of partial or entire revolution or revolutions of the crank-shaft employed in reciprocating the pistons;

(2) The crankxmovement within pre-dete-rmined limits shall be the means of pumping, measuring and indicating the quantity. of liquid delivered;

(3) The pumping mechanism shall em body means of regulating with accuracy,

and, if desired, registering,-the exact amount of liquid delivered,according to a standard of measurement adopted, adjustable relatively to the increments of rotation of the crank-shaft;

(4) The structure as a whole shall be simple, compact, self-contained, and operablew1th"facil1tyby hand or otherwise asa means of supplying the public need as occasion may require; and be, moreover, strong, durable and easily maintained in working order.

To these andother incidental ends-my invention consists in the embodiment of principlesof structure and operation as exhibited in the "mechanism and apparatus herein described, and shown in the drawings accompanying and forming :part of this specification, "showing the best form in which I have contemplated the application of'the principles involved in the invention.

' In'thedrawing'shereto attached-z Figure 11 is'awperspectivelevation of the device complete Fig.2, a'rertical-axial se ctionin a plane parallel with theflplane of the cam i and ,Fi a section'taken on the line 3+3 of Fig. 2 looking'in the direction of the arrow. 'Theupper portion of the cam mt by this plane is not shown in section.

Specification of Letters Patent.

Patented nee. e, 1919.

Application filed November 28, 1918. Serial No. 133,904.

Z),'the liquid column being-lifted by the plunger temporarily under load passing through the check-Valve opening of the plunger not under load; and thus alterhating.

The pump barrel, A, is preferably formed of two duplicate open ended cylinders, (.1, a, seated tandem one upon the other, each provided with a replaceable lining, a, in each of which a plunger, B, operates, carrying a lift orcheck-valve, b, seating upon the inner margin of the annulus and controlling .the central opening. The valve has a central up 'ard stem, 5 uided through a cen tral boss of the valve crib, 72 springing fronropposite sides of the annulus and terminating in a fork. Z), for a pivotal connection with an operating arm to be described later. Coiled about the stem 7), under the yoke, a spring, 8, holds the alve normally to its seat.

The upper and lower ends of the pump barrel, A, are closed by caps, (1, (4, respectively, each being pierced :t'or pipes through which the liquid enters and discharges; and the lower cap, a, is extended as a base upon which the entire structure rests. Rods, r, connecting the upper and lower caps and base hold all parts firmly together.

Each duplicate part, a, of the pump'barrel is formed with a semi-cylindrical enlargement, a open interiorly; and the sides of each enlargement are oppositely pierced tor the reception, at one side of a threaded cap. and at the other side for one end of w' 'o 'shaft, C, D,.respectiyely, each of which, carries, within tl ie enlargement, a crank arm, 0",,(Z respectively, eachextend ing to and engaging pivotally the fork, 6 of its contiguous phmgenB; Thence outwardly, each rocksh aft extends through a stuffing box, located intheside Walllof the I enlargementnnd thence through a sleeve, a, said sleeve constitutlngi both a gland for length of stroke of the plungers,

l d, as already 'gagement of the ball-bearing rollers, 0 (1?,

the stuffing box and a bearing for the rockshaft. The sleevein addition to being seated as agland in the stuffing box in theside wall of the enlargement is also supported in. a. bracket, a exterior thereto. A removable bearing,' e, secured upon a plate extension, 0 ofthe pump barrel supports the exterior end of the rockshaft. Secured to the outer extremity of each rockshaft is a crank arm, 0 (V, respectively, for a purpose presently to be described.

Midway between the two enlargements, a, of the pump barrel, A, is a laterally elongated bracket sleeve, 7, constituting a bearing and support for a driving shaft, F,

. which, at one extremity carriesat the side of the pump-barrel opposite the arms, r (Z )a hand crank; and at the other extremity and externally adjacent to said crank arms 0 d carries a cam plate G. This cam'plate is provided at its inner side with a recessed cam-track, g, in which ball bearing rollers, 0 d, of the said crank arms engage at points diametrically oppo site the axis of rotation of the can1,-'\\hich is the axis of the driving shaft, I, i

The cam plate, G, is somewhat oval, the form being determined by the necessary curvilinear eccentricity of the track, {1. The plate is attached by screws or bolts, 9 to a disk or crank arm, f fixedly secured to the extremity ofthe driving shaft, F. The bolts are located-upon the same diameter of the disk 7, and pass through perforations elongated in the same diameter to permit adjustments of the cam to greater or less eccentricity, 'to vary correspondingly the B, thereby varying the quantity of liquid pumped in the same proportion, in relation to the increments of rotation-the action of the cam being transmitted through the ball-bearing rollers 0 d,- and crank'arms O JZ to'the rock shafts, D, respectively, and thence by the crank arms, 0 al to the pump plungers, B. 1

- The axes of the jrock shafts, (1,13 and driying .shaft, F, are arranged parallel, equi-distant, and in a common plane which is parallel with the axis of thepump barrel;

explained, the points with the cam-track, g, are in diametric relation' opposite the cam axis of rotation. It will be obvious, therefore,-that.each entire revolution of the cam produces a complete double stroke of each plunger, B, in opposite directions, son of the duplicate connections of the plungers with the common cam-track, but at 180 degrees apart.

Taking advantage of these conditions, I so plot the cam'track as to overlap these opposite strokes, so that each plunger begins its load stroke before the other has of eneach to the other, by rea-' eeann quitefinished its load stroke and the return mal weakening of the stroke action toward the beginning and end of the lifting stroke is eliminated by reinforcing each plunger by the other at such periods, and a uniform and constant flow results in quantity exactly proportional to the increments of revolution or revolutions.

The mode of operation has been already sufficiently indicated. A continuous revo lution of the crank shaft produces a continuous flow of liquid. Whatever ratio between revolution and output is adoptedaccording to the adjustable limitations of the structure-fractions of a revolution will produce corresponding fractions of the standard output per revolution. The use ofa fixed annular scale (not shown) concentric with the driving shaft and adjacent to the crank arm, 7, renders it easy to regulate the limit of movement as desired.

it will. be noted also that the body of the pump consisting of the two duplicate cylinders in tandem relation upon a common base, constitutes a support and bearing for the entire system of moving parts, and the whole constitutes a complete entity easily trans iiortable, equipped for instant use.

While I regard the single pump barrel and single cam operating two tandem plungers as the best and simplest form of my invention, it will be obvious that the principle may be embodied in other forms,as by duplicating pump barrels, or cams, or botln The principle may also be applied to, a plurality of plungers operated in gangsgin an extended tube to raise a liquid to ab normal heights; but these I regard as with in the spirit and purpose of my invention together with mere structural variations.

. I claim as my invention and desire to secure by Letters Patent of the United States 1. In a pumping apparatus the combina-. tion and arrangement of a pump'barrel utif lized as a support, two lift plungers operating in independent zones; a crank shaft cenne'ction for each said plunger in a contignous zone and having external bearings; an exterior cam and shaft arrangedbetween said crank shafts; and an operative crank arm for each crank shaft separately engaged by said cam.

2. A pumping mechanism embodying a pump-barrel; reciprocating plungers there: in, in series; a'rock shaft for each'plunger" 'journale'd on the pump barrel as a support-,.

and extending partly within and-partly connected with the plungers; a driving shaft and a contour adapted to pump barrel,

eanne of the rock-shafts.

A lift pump, embodying a pump barin series; mechanism concam; and .a rotatable eccentric cam. having a side slot with opposite operative surfaces reciprocate both plungers simultaneously with diverse and overlapping strokes to equalize and render the How and delivery of liquid uniform and definitely correspondent With the quantum of rotation of the In a cam.

duce uniform flow and deliveryg said cam being also adjustable in eccentricity to regulate the. quantity delivered at each-revolution' of the cam; and operative mechanism connecting the cam and plungers,

' 5. In a canroperated pump of the charace ter indicated a pump-barrel consisting of wo duplicate sections,

plunger and an adjacent-zone for the "complete operation of itsimmediate operating connection; and' each said last mentioned zone provided with an external enlargement of its inclosure,

P In a pump of the character iinligated, two duplic'ate units adapted to ranged in bearings ,upon

pump of the characterindicated, a pump-barrel; two pl ungers in series therein a rotatable eccentric cam adapted 'to open ate, overlap and equalize the strokestoj pro each having a zone adapted to the complete operationof its my hand ill presenceof constituting-bearings for ex ternal connections to? the operating cam;

seatin tandem relations, each provided with a lateral openingfor convenience in assembling and an external cover for the same, provided with bearings for a rock shaft carryinga.crank arm within the cover for the operation of a plunger Within the pump barrel.

7: The combination of a pump barrel; two

reciprocating .plungers therein; two rockdr ving shaft arshafts and an intermediate the pump barrel equi-distantandin a common axial plane parallel with the axis of the'pump barrel; an operating cam-upon'the driving shaft; and crank arms upon'the rockshafts connecting atone side with the pump plungers and at the otherwith the operating cam.

' 8. In apump o fthe character indicated, having two plungers in series, in-cdmbina tion with anieccentric operatin cam having a single continuous cam trac 1:, two rocks'hafts' in bearings atopposite sides of the cam shaft, and having arms connected at one side with. the plungers, and at the other with the cam track at diametrically opposite sidesof the axis-10f rotation all mounted on the pump barrel as a support.

In testimony whereof I have hereunto set two subscribing witnesses;

LINNAEUS E. BAKER;

iWitnesses R. R. Enoon, F, -M11.Ls., 

